A suburban St. Louis woman whose water broke during a traffic jam has delivered her third child in a parking lot.

Katie Gaeta, 31, thought she had plenty of time to get to the hospital when contractions started last week, The St. Louis Post-Dispatch reported. She had been in labor several hours before her older children -- ages 2 and 4 -- were born.

After a relative picked up the older children, she and her husband, Tony Gaeta, began their 30-minute drive to Mercy Birthing Center, with their labor coach following behind. But when her water broke, traffic wasn't moving because of an accident. Baby Emma arrived after her husband pulled into an Old Navy store parking lot in Sunset Hills.